diff options
author | H Hartley Sweeten <hartleys@visionengravers.com> | 2012-08-16 19:48:14 -0700 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-17 08:14:33 -0700 |
commit | fa090ab24bc8155ca8c4fbeafec0873da03f04bc (patch) | |
tree | fb6ce246dcfa9c74cf5f14338a06724360a825bb /drivers/staging | |
parent | 2a4b0ba517bb30f764b22efa47f3ce937318b04e (diff) |
staging: comedi: cb_pcimdda: remove forward declarations
Move a couple of the functions in order to remove the need for
the forward declarations.
Also, remove the unnecessary comments.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging')
-rw-r--r-- | drivers/staging/comedi/drivers/cb_pcimdda.c | 241 |
1 files changed, 94 insertions, 147 deletions
diff --git a/drivers/staging/comedi/drivers/cb_pcimdda.c b/drivers/staging/comedi/drivers/cb_pcimdda.c index 04b9995d1cf4..75e803a9f102 100644 --- a/drivers/staging/comedi/drivers/cb_pcimdda.c +++ b/drivers/staging/comedi/drivers/cb_pcimdda.c @@ -149,141 +149,12 @@ struct board_private_struct { }; -static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); -static int ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data); - -/*--------------------------------------------------------------------------- - HELPER FUNCTION DECLARATIONS ------------------------------------------------------------------------------*/ - /* returns a maxdata value for a given n_bits */ static inline unsigned int figure_out_maxdata(int bits) { return ((unsigned int)1 << bits) - 1; } -/* - * Probes for a supported device. - * - * Prerequisite: private be allocated already inside dev - * - * If the device is found, it returns 0 and has the following side effects: - * - * o assigns a struct pci_dev * to dev->private->pci_dev - * o assigns a struct board * to dev->board_ptr - * o sets dev->private->registers - * o sets dev->private->dio_registers - * - * Otherwise, returns a -errno on error - */ -static int probe(struct comedi_device *dev, const struct comedi_devconfig *it); - -/*--------------------------------------------------------------------------- - FUNCTION DEFINITIONS ------------------------------------------------------------------------------*/ - -/* - * Attach is called by the Comedi core to configure the driver - * for a particular board. If you specified a board_name array - * in the driver structure, dev->board_ptr contains that - * address. - */ -static int attach(struct comedi_device *dev, struct comedi_devconfig *it) -{ - const struct board_struct *thisboard; - struct board_private_struct *devpriv; - struct comedi_subdevice *s; - int err; - - err = alloc_private(dev, sizeof(*devpriv)); - if (err) - return err; - devpriv = dev->private; - -/* - * If you can probe the device to determine what device in a series - * it is, this is the place to do it. Otherwise, dev->board_ptr - * should already be initialized. - */ - err = probe(dev, it); - if (err) - return err; - thisboard = comedi_board(dev); - -/* Output some info */ - printk("comedi%d: %s: ", dev->minor, thisboard->name); - -/* - * Initialize dev->board_name. Note that we can use the "thisboard" - * macro now, since we just initialized it in the last line. - */ - dev->board_name = thisboard->name; - - err = comedi_alloc_subdevices(dev, 2); - if (err) - return err; - - s = dev->subdevices + 0; - - /* analog output subdevice */ - s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITABLE | SDF_READABLE; - s->n_chan = thisboard->ao_chans; - s->maxdata = figure_out_maxdata(thisboard->ao_bits); - /* this is hard-coded here */ - if (it->options[2]) - s->range_table = &range_bipolar10; - else - s->range_table = &range_bipolar5; - s->insn_write = &ao_winsn; - s->insn_read = &ao_rinsn; - - s = dev->subdevices + 1; - /* digital i/o subdevice */ - if (thisboard->dio_chans) { - switch (thisboard->dio_method) { - case DIO_8255: - /* - * this is a straight 8255, so register us with - * the 8255 driver - */ - subdev_8255_init(dev, s, NULL, devpriv->dio_registers); - devpriv->attached_to_8255 = 1; - break; - case DIO_INTERNAL: - default: - printk("DIO_INTERNAL not implemented yet!\n"); - return -ENXIO; - break; - } - } else { - s->type = COMEDI_SUBD_UNUSED; - } - - printk("attached\n"); - - return 1; -} - -static void detach(struct comedi_device *dev) -{ - struct board_private_struct *devpriv = dev->private; - - if (devpriv) { - if (dev->subdevices && devpriv->attached_to_8255) { - subdev_8255_cleanup(dev, dev->subdevices + 2); - devpriv->attached_to_8255 = 0; - } - if (devpriv->pci_dev) { - if (devpriv->registers) - comedi_pci_disable(devpriv->pci_dev); - pci_dev_put(devpriv->pci_dev); - } - } -} - static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { @@ -344,24 +215,6 @@ static int ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, return i; } -/*--------------------------------------------------------------------------- - HELPER FUNCTION DEFINITIONS ------------------------------------------------------------------------------*/ - -/* - * Probes for a supported device. - * - * Prerequisite: private be allocated already inside dev - * - * If the device is found, it returns 0 and has the following side effects: - * - * o assigns a struct pci_dev * to dev->private->pci_dev - * o assigns a struct board * to dev->board_ptr - * o sets dev->private->registers - * o sets dev->private->dio_registers - * - * Otherwise, returns a -errno on error - */ static int probe(struct comedi_device *dev, const struct comedi_devconfig *it) { const struct board_struct *thisboard; @@ -411,6 +264,100 @@ static int probe(struct comedi_device *dev, const struct comedi_devconfig *it) return -ENODEV; } +static int attach(struct comedi_device *dev, struct comedi_devconfig *it) +{ + const struct board_struct *thisboard; + struct board_private_struct *devpriv; + struct comedi_subdevice *s; + int err; + + err = alloc_private(dev, sizeof(*devpriv)); + if (err) + return err; + devpriv = dev->private; + +/* + * If you can probe the device to determine what device in a series + * it is, this is the place to do it. Otherwise, dev->board_ptr + * should already be initialized. + */ + err = probe(dev, it); + if (err) + return err; + thisboard = comedi_board(dev); + +/* Output some info */ + printk("comedi%d: %s: ", dev->minor, thisboard->name); + +/* + * Initialize dev->board_name. Note that we can use the "thisboard" + * macro now, since we just initialized it in the last line. + */ + dev->board_name = thisboard->name; + + err = comedi_alloc_subdevices(dev, 2); + if (err) + return err; + + s = dev->subdevices + 0; + + /* analog output subdevice */ + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE | SDF_READABLE; + s->n_chan = thisboard->ao_chans; + s->maxdata = figure_out_maxdata(thisboard->ao_bits); + /* this is hard-coded here */ + if (it->options[2]) + s->range_table = &range_bipolar10; + else + s->range_table = &range_bipolar5; + s->insn_write = &ao_winsn; + s->insn_read = &ao_rinsn; + + s = dev->subdevices + 1; + /* digital i/o subdevice */ + if (thisboard->dio_chans) { + switch (thisboard->dio_method) { + case DIO_8255: + /* + * this is a straight 8255, so register us with + * the 8255 driver + */ + subdev_8255_init(dev, s, NULL, devpriv->dio_registers); + devpriv->attached_to_8255 = 1; + break; + case DIO_INTERNAL: + default: + printk("DIO_INTERNAL not implemented yet!\n"); + return -ENXIO; + break; + } + } else { + s->type = COMEDI_SUBD_UNUSED; + } + + printk("attached\n"); + + return 1; +} + +static void detach(struct comedi_device *dev) +{ + struct board_private_struct *devpriv = dev->private; + + if (devpriv) { + if (dev->subdevices && devpriv->attached_to_8255) { + subdev_8255_cleanup(dev, dev->subdevices + 2); + devpriv->attached_to_8255 = 0; + } + if (devpriv->pci_dev) { + if (devpriv->registers) + comedi_pci_disable(devpriv->pci_dev); + pci_dev_put(devpriv->pci_dev); + } + } +} + static struct comedi_driver cb_pcimdda_driver = { .driver_name = "cb_pcimdda", .module = THIS_MODULE, |